smart drugs

Is there still research on Smart Drugs. I read a story on Smart Drugs in
Rolling Stone several years ago. The research was being done by UC at
Berkley. Are they still doing this research, or is anbody else
researching this. Has there been any papers published on this subject.
The reason Im asking is that im doing a paper in a survry Psyc class.
Any info or you know of places where i can find some please let me know.
Rjacobs